<template>
  <el-main>
    <!-- 查询条件 -->
    <el-form :model="searchModel" ref="searchForm" label-width="80px" :inline="true" size="small">
      <el-form-item>
        <el-input v-model="searchModel.roleName" @keyup.enter.native="search" placeholder="请输入角色名称" />
      </el-form-item>
      <el-form-item>
        <el-button type="primary" icon="el-icon-search" @click="search">查询</el-button>
        <el-button icon="el-icon-refresh-right" @click="resetValue">重置</el-button>
        <el-button type="success" icon="el-icon-plus" @click="openAddWindow" v-if="hasPermission('sys:role:add')">新增角色</el-button>
      </el-form-item>
    </el-form>
    <!-- 数据表格 -->
    <el-table :data="roleList" :height="tableHeight" border stripe style="width: 100%; margin-bottom: 10px">
      <el-table-column prop="id" label="角色编号" width="100" align="center"></el-table-column>
      <el-table-column prop="roleCode" label="角色编码"></el-table-column>
      <el-table-column prop="roleName" label="角色名称"></el-table-column>
      <el-table-column prop="remark" label="角色备注"></el-table-column>
      <el-table-column label="操作" align="center" width="290">
        <template slot-scope="scope">
          <el-button icon="el-icon-edit" type="primary" size="small" @click="handleEdit(scope.row)" v-if="hasPermission('sys:role:add')">编辑</el-button>
          <el-button icon="el-icon-delete" type="danger" size="small" @click="handleDelete(scope.row)" v-if="hasPermission('sys:role:edit')">删除</el-button>
          <el-button icon="el-icon-setting" type="primary" size="small" @click="assignRole(scope.row)" v-if="hasPermission('sys:role:assign')">分配权限
          </el-button>
        </template>
      </el-table-column>
    </el-table>
    <!-- 分页工具栏 -->
    <el-pagination background @size-change="handleSizeChange" @current-change="handleCurrentChange"
      :current-page="searchModel.pageNo" :page-sizes="[5, 10, 20, 30, 40, 50]" :page-size="10"
      layout="total, sizes, prev, pager, next, jumper" :total="total">
    </el-pagination>
    <!-- 添加和修改角色窗口 -->
    <system-dialog :title="roleDialog.title" :visible="roleDialog.visible" :width="roleDialog.width"
      :height="roleDialog.height" @onClose="onClose" @onConfirm="onConfirm">
      <div slot="content">
        <el-form :model="role" ref="roleForm" :rules="rules" label-width="80px" :inline="false" size="small">
          <el-form-item label="角色编码" prop="roleCode">
            <el-input v-model="role.roleCode"></el-input>
          </el-form-item>
          <el-form-item label="角色名称" prop="roleName">
            <el-input v-model="role.roleName"></el-input>
          </el-form-item>
          <el-form-item label="角色描述">
            <el-input type="textarea" v-model="role.remark" :rows="5"></el-input>
          </el-form-item>
        </el-form>
      </div>
    </system-dialog>
    <!-- 分配权限树窗口 -->
    <system-dialog :title="assignDialog.title" :visible="assignDialog.visible" :width="assignDialog.width"
      :height="assignDialog.height" @onClose="onAssignClose" @onConfirm="onAssignConfirm">
      <div slot="content">
        <el-tree ref="assignTree" :data="assignTreeData" node-key="id" :props="defaultProps" empty-text="暂无数据"
          :show-checkbox="true" :highlight-current="true" default-expand-all></el-tree>
      </div>
    </system-dialog>

  </el-main>
</template>
<script>
  import {
    getRoles,
    addRole,
    updateRole,
    checkRole,
    deleteRole,
    getAssignTree,
    assignSave
  } from "@/api/role";
  import systemDialog from "@/components/System/systemDialog.vue";
  import leafUtils from '@/utils/leaf'
  export default {
    name: "roleList",
    components: {
      systemDialog,
    },
    data() {
      return {
        //查询条件
        searchModel: {
          roleName: "",
          pageNo: 1,
          pageSize: 10,
          userId: this.$store.getters.id, //数据库后端接口对应的是userID
        },
        roleList: [], //数据列表
        tableHeight: 0, //表格高度
        //pageNo: 1, //当前页码
        //pageSize: 10, //每页显示数量
        total: 0, //总页数
        //创建角色的表单验证规则
        rules: {
          roleCode: [{
            required: true,
            trigger: "blur",
            message: "请输入角色编码",
          }, ],
          roleName: [{
            required: true,
            trigger: "blur",
            message: "请输入角色名称",
          }, ],
        },
        //添加和修改角色窗口属性
        roleDialog: {
          title: "",
          visible: false,
          height: 230,
          width: 500,
        },
        //角色对象
        role: {
          id: "",
          roleCode: "",
          roleName: "",
          remark: "",
          createUser: this.$store.getters.id,
        },
        //分配权限窗口属性
        assignDialog: {
          title: '',
          visible: false,
          height: 450,
          width: 300
        },
        roleId: '', //角色ID
        assignTreeData: [], //树节点数据
        //树节点属性
        defaultProps: {
          children: 'children',
          label: 'label'
        },
      };
    },
    //初始化时调用
    created() {
      this.search();
    },
    //挂载后调用
    mounted() {
      this.$nextTick(() => {
        this.tableHeight = window.innerHeight - 220;
      });
    },
    methods: {
      /**查询*/
      async search() {
        let res = await getRoles(this.searchModel);
        if (res.success) {
          // console.log(res)
          this.roleList = res.data.records;
          this.total = res.data.total;
        }
      },
      /**重置查询条件 */
      resetValue() {
        this.searchModel.roleName = "";
        this.search();
      },
      /**当每页数量发生变化时触发该事件*/
      handleSizeChange(size) {
        this.searchModel.pageSize = size;
        this.search();
      },
      /**当页码发生变化时触发该事件 */
      handleCurrentChange(page) {
        this.searchModel.pageNo = page;
        this.search();
      },
      /** 打开添加窗口 */
      openAddWindow() {
        //清空表单数据
        this.$resetForm("roleForm", this.role);
        this.roleDialog.title = "新增角色"; //设置窗口标题
        this.roleDialog.visible = true; //显示窗口
      },
      /*** 窗口取消事件 */
      onClose() {
        this.roleDialog.visible = false;
      },
      /*** 窗口确认事件 */
      onConfirm() {
        //表单验证
        this.$refs.roleForm.validate(async (valid) => {
          if (valid) {
            let res = null;
            //判断角色ID是否为空
            if (this.role.id === "") {
              //新增
              //发送添加请求
              res = await addRole(this.role);
            } else {
              //发送修改请求
              res = await updateRole(this.role);
            }
            //判断是否成功
            if (res.success) {
              this.$message.success(res.message);
              //刷新
              this.search(this.pageNo, this.pageSize);
              //关闭窗口
              this.roleDialog.visible = false;
            } else {
              this.$message.error(res.message);
            }
          }
        });
      },
      /**编辑窗口 */
      handleEdit(row) {
        //数据回显
        this.$objCopy(row, this.role); //将当前编辑的数据复制到role对象中
        //设置窗口标题
        this.roleDialog.title = "编辑角色";
        //显示编辑角色窗口
        this.roleDialog.visible = true;
      },
      /**删除 */
      async handleDelete(row) {
        //查询该角色是否被使用
        let result = await checkRole({
          id: row.id,
        });
        //判断是否可以删除
        if (!result.success) {
          //提示不能删除
          this.$message.warning(result.message);
        } else {
          //确认是否删除
          let confirm = await this.$myconfirm("确定要删除该数据吗?");
          if (confirm) {
            //发送删除请求
            let res = await deleteRole({
              id: row.id,
            });
            //判断是否成功
            if (res.success) {
              //成功提示
              this.$message.success(res.message);
              //刷新
              this.search();
            } else {
              //失败提示
              this.$message.error(res.message);
            }
          }
        }
      },
      /**分配权限 */
      async assignRole(row) {
        //设置角色ID
        this.roleId = row.id
        //构建参数
        let params = {
          roleId: row.id,
          userId: this.$store.getters.id
        }
        //发送查询请求
        let res = await getAssignTree(params)
        //判断是否成功
        if (res.success) {
          //获取当前登录用户拥有的所有权限
          let permissionList = res.data.permissionList
          //获取当前被分配的角色已经拥有的权限信息
          let checkList = res.data.checkList
          //判断当前菜单是否是末级
          let {
            setLeaf
          } = leafUtils()
          //设置权限菜单列表
          let newPermissionList = setLeaf(permissionList)
          //设置树节点菜单数据
          this.assignTreeData = newPermissionList
          //将回调延迟到下次DOM更新循环之后执行,在修改数据之后立即使用它,然后等待DOM更新。
          this.$nextTick(() => {
            //获取树菜单的节点数据
            let nodes = this.$refs.assignTree.children
            //设置子节点
            this.setChild(nodes, checkList)
          })
        }
        this.assignDialog.title = `给[${row.roleName}]分配权限`
        this.assignDialog.visible = true
      },
      /**设置子节点 */
      setChild(childNodes, checkList) {
        //判断是否存在子节点
        if (childNodes && childNodes.length > 0) {
          //循环所有权限
          for (let i = 0; i < childNodes.length; i++) {
            //根据 data 或者 key 拿到 Tree 组件中的 node
            let node = this.$refs.assignTree.getNode(childNodes[i])
            //判断是否已经拥有对应的角色数据
            if (checkList && checkList.length > 0) {
              //循环遍历已有的权限集合
              for (let j = 0; j < checkList.length; j++) {
                //找到已经存在的菜单权限节点
                if (checkList[j] == childNodes[i].id) {
                  //如果节点是展开状态，则将树节点选中
                  if (childNodes[i].open) {
                    this.$refs.assignTree.setChecked(node, true)
                    break
                  }
                }
              }
            }
            //如果存在子节点，则递归选中
            if (childNodes[i].children) {
              this.setChild(childNodes[i].children, checkList)
            }
          }
        }
      },
      /**关闭分配权限窗口*/
      onAssignClose() {
        this.assignDialog.visible = false
      },
      /**分配权限窗口表单提交*/
      async onAssignConfirm() {
        //获取选中的节点key
        let ids = this.$refs.assignTree.getCheckedKeys()
        //获取选中节点的父节点id
        let pids = this.$refs.assignTree.getHalfCheckedKeys()
        //组装选中的节点ID数据
        let listId = ids.concat(pids)
        //组装参数
        let params = {
          roleId: this.roleId,// 当前要分配的角色ID
          list: listId //选中的节点id列表
        }
        //发送请求
        let res = await assignSave(params)
        //判断是否成功
        if (res.success) {
          //关闭窗口
          this.assignDialog.visible = false
          //提示成功
          this.$message.success(res.message)
        } else {
          //提示失败
          this.$message.error(res.message)
        }
      }
    },
  }

</script>
